The hammer spring, sear spring, recoil spring, trigger return spring should be the same between a CZ75B and CZ85, like yours.
Sometimes people replace/substitute springs. They replace the hammer and recoil and even the trigger return springs with a lower powered spring. Those may be shorter or smaller spring wire diameter. There are pros and cons to spring replacement, so do some firing of your pistol and some research on the reasons for spring changes before doing it. You want your pistol to remain reliable with the ammo you shoot through it.
And, wear/use can make s spring, like the recoil spring, shorter over time. As it's used it becomes weaker and shorter.